2 * Copyright (c) 2008-2011 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/nl80211.h>
18 #include <linux/delay.h>
22 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
23 struct ieee80211_vif
*vif
);
25 u8
ath9k_parse_mpdudensity(u8 mpdudensity
)
28 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
29 * 0 for no restriction
38 switch (mpdudensity
) {
44 /* Our lower layer calculations limit our precision to
60 static bool ath9k_has_pending_frames(struct ath_softc
*sc
, struct ath_txq
*txq
)
64 spin_lock_bh(&txq
->axq_lock
);
66 if (txq
->axq_depth
|| !list_empty(&txq
->axq_acq
))
69 spin_unlock_bh(&txq
->axq_lock
);
73 static bool ath9k_setpower(struct ath_softc
*sc
, enum ath9k_power_mode mode
)
78 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
79 ret
= ath9k_hw_setpower(sc
->sc_ah
, mode
);
80 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
85 void ath9k_ps_wakeup(struct ath_softc
*sc
)
87 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
89 enum ath9k_power_mode power_mode
;
91 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
92 if (++sc
->ps_usecount
!= 1)
95 power_mode
= sc
->sc_ah
->power_mode
;
96 ath9k_hw_setpower(sc
->sc_ah
, ATH9K_PM_AWAKE
);
99 * While the hardware is asleep, the cycle counters contain no
100 * useful data. Better clear them now so that they don't mess up
101 * survey data results.
103 if (power_mode
!= ATH9K_PM_AWAKE
) {
104 spin_lock(&common
->cc_lock
);
105 ath_hw_cycle_counters_update(common
);
106 memset(&common
->cc_survey
, 0, sizeof(common
->cc_survey
));
107 memset(&common
->cc_ani
, 0, sizeof(common
->cc_ani
));
108 spin_unlock(&common
->cc_lock
);
112 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
115 void ath9k_ps_restore(struct ath_softc
*sc
)
117 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
118 enum ath9k_power_mode mode
;
122 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
123 if (--sc
->ps_usecount
!= 0)
127 ath9k_hw_setrxabort(sc
->sc_ah
, 1);
128 ath9k_hw_stopdmarecv(sc
->sc_ah
, &reset
);
129 mode
= ATH9K_PM_FULL_SLEEP
;
130 } else if (sc
->ps_enabled
&&
131 !(sc
->ps_flags
& (PS_WAIT_FOR_BEACON
|
133 PS_WAIT_FOR_PSPOLL_DATA
|
134 PS_WAIT_FOR_TX_ACK
))) {
135 mode
= ATH9K_PM_NETWORK_SLEEP
;
136 if (ath9k_hw_btcoex_is_enabled(sc
->sc_ah
))
137 ath9k_btcoex_stop_gen_timer(sc
);
142 spin_lock(&common
->cc_lock
);
143 ath_hw_cycle_counters_update(common
);
144 spin_unlock(&common
->cc_lock
);
146 ath9k_hw_setpower(sc
->sc_ah
, mode
);
149 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
152 static void __ath_cancel_work(struct ath_softc
*sc
)
154 cancel_work_sync(&sc
->paprd_work
);
155 cancel_work_sync(&sc
->hw_check_work
);
156 cancel_delayed_work_sync(&sc
->tx_complete_work
);
157 cancel_delayed_work_sync(&sc
->hw_pll_work
);
159 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
160 if (ath9k_hw_mci_is_enabled(sc
->sc_ah
))
161 cancel_work_sync(&sc
->mci_work
);
165 static void ath_cancel_work(struct ath_softc
*sc
)
167 __ath_cancel_work(sc
);
168 cancel_work_sync(&sc
->hw_reset_work
);
171 static void ath_restart_work(struct ath_softc
*sc
)
173 ieee80211_queue_delayed_work(sc
->hw
, &sc
->tx_complete_work
, 0);
175 if (AR_SREV_9340(sc
->sc_ah
) || AR_SREV_9485(sc
->sc_ah
) ||
176 AR_SREV_9550(sc
->sc_ah
))
177 ieee80211_queue_delayed_work(sc
->hw
, &sc
->hw_pll_work
,
178 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL
));
180 ath_start_rx_poll(sc
, 3);
184 static bool ath_prepare_reset(struct ath_softc
*sc
, bool retry_tx
, bool flush
)
186 struct ath_hw
*ah
= sc
->sc_ah
;
189 ieee80211_stop_queues(sc
->hw
);
191 sc
->hw_busy_count
= 0;
193 del_timer_sync(&sc
->rx_poll_timer
);
195 ath9k_debug_samp_bb_mac(sc
);
196 ath9k_hw_disable_interrupts(ah
);
198 if (!ath_stoprecv(sc
))
201 if (!ath_drain_all_txq(sc
, retry_tx
))
205 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
206 ath_rx_tasklet(sc
, 1, true);
207 ath_rx_tasklet(sc
, 1, false);
215 static bool ath_complete_reset(struct ath_softc
*sc
, bool start
)
217 struct ath_hw
*ah
= sc
->sc_ah
;
218 struct ath_common
*common
= ath9k_hw_common(ah
);
221 if (ath_startrecv(sc
) != 0) {
222 ath_err(common
, "Unable to restart recv logic\n");
226 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
227 sc
->config
.txpowlimit
, &sc
->curtxpow
);
229 clear_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
230 ath9k_hw_set_interrupts(ah
);
231 ath9k_hw_enable_interrupts(ah
);
233 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) && start
) {
234 if (!test_bit(SC_OP_BEACONS
, &sc
->sc_flags
))
237 ath9k_set_beacon(sc
);
239 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
240 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
241 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
242 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
243 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
246 ath_restart_work(sc
);
249 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_ANT_DIV_COMB
) && sc
->ant_rx
!= 3)
250 ath_ant_comb_update(sc
);
252 ieee80211_wake_queues(sc
->hw
);
257 static int ath_reset_internal(struct ath_softc
*sc
, struct ath9k_channel
*hchan
,
260 struct ath_hw
*ah
= sc
->sc_ah
;
261 struct ath_common
*common
= ath9k_hw_common(ah
);
262 struct ath9k_hw_cal_data
*caldata
= NULL
;
267 __ath_cancel_work(sc
);
269 spin_lock_bh(&sc
->sc_pcu_lock
);
271 if (!(sc
->hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
)) {
273 caldata
= &sc
->caldata
;
282 if (!ath_prepare_reset(sc
, retry_tx
, flush
))
285 ath_dbg(common
, CONFIG
, "Reset to %u MHz, HT40: %d fastcc: %d\n",
286 hchan
->channel
, IS_CHAN_HT40(hchan
), fastcc
);
288 r
= ath9k_hw_reset(ah
, hchan
, caldata
, fastcc
);
291 "Unable to reset channel, reset status %d\n", r
);
295 if (!ath_complete_reset(sc
, true))
299 spin_unlock_bh(&sc
->sc_pcu_lock
);
305 * Set/change channels. If the channel is really being changed, it's done
306 * by reseting the chip. To accomplish this we must first cleanup any pending
307 * DMA, then restart stuff.
309 static int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
310 struct ath9k_channel
*hchan
)
314 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
317 r
= ath_reset_internal(sc
, hchan
, false);
322 static void ath_node_attach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
323 struct ieee80211_vif
*vif
)
327 an
= (struct ath_node
*)sta
->drv_priv
;
329 #ifdef CONFIG_ATH9K_DEBUGFS
330 spin_lock(&sc
->nodes_lock
);
331 list_add(&an
->list
, &sc
->nodes
);
332 spin_unlock(&sc
->nodes_lock
);
337 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
) {
338 ath_tx_node_init(sc
, an
);
339 an
->maxampdu
= 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR
+
340 sta
->ht_cap
.ampdu_factor
);
341 density
= ath9k_parse_mpdudensity(sta
->ht_cap
.ampdu_density
);
342 an
->mpdudensity
= density
;
346 static void ath_node_detach(struct ath_softc
*sc
, struct ieee80211_sta
*sta
)
348 struct ath_node
*an
= (struct ath_node
*)sta
->drv_priv
;
350 #ifdef CONFIG_ATH9K_DEBUGFS
351 spin_lock(&sc
->nodes_lock
);
353 spin_unlock(&sc
->nodes_lock
);
357 if (sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
358 ath_tx_node_cleanup(sc
, an
);
361 void ath9k_tasklet(unsigned long data
)
363 struct ath_softc
*sc
= (struct ath_softc
*)data
;
364 struct ath_hw
*ah
= sc
->sc_ah
;
365 struct ath_common
*common
= ath9k_hw_common(ah
);
366 enum ath_reset_type type
;
368 u32 status
= sc
->intrstatus
;
372 spin_lock(&sc
->sc_pcu_lock
);
374 if ((status
& ATH9K_INT_FATAL
) ||
375 (status
& ATH9K_INT_BB_WATCHDOG
)) {
377 if (status
& ATH9K_INT_FATAL
)
378 type
= RESET_TYPE_FATAL_INT
;
380 type
= RESET_TYPE_BB_WATCHDOG
;
382 ath9k_queue_reset(sc
, type
);
386 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
387 if ((status
& ATH9K_INT_TSFOOR
) && sc
->ps_enabled
) {
389 * TSF sync does not look correct; remain awake to sync with
392 ath_dbg(common
, PS
, "TSFOOR - Sync with next Beacon\n");
393 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
| PS_BEACON_SYNC
;
395 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
397 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
398 rxmask
= (ATH9K_INT_RXHP
| ATH9K_INT_RXLP
| ATH9K_INT_RXEOL
|
401 rxmask
= (ATH9K_INT_RX
| ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
403 if (status
& rxmask
) {
404 /* Check for high priority Rx first */
405 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
406 (status
& ATH9K_INT_RXHP
))
407 ath_rx_tasklet(sc
, 0, true);
409 ath_rx_tasklet(sc
, 0, false);
412 if (status
& ATH9K_INT_TX
) {
413 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
414 ath_tx_edma_tasklet(sc
);
419 ath9k_btcoex_handle_interrupt(sc
, status
);
422 /* re-enable hardware interrupt */
423 ath9k_hw_enable_interrupts(ah
);
425 spin_unlock(&sc
->sc_pcu_lock
);
426 ath9k_ps_restore(sc
);
429 irqreturn_t
ath_isr(int irq
, void *dev
)
431 #define SCHED_INTR ( \
433 ATH9K_INT_BB_WATCHDOG | \
443 ATH9K_INT_GENTIMER | \
446 struct ath_softc
*sc
= dev
;
447 struct ath_hw
*ah
= sc
->sc_ah
;
448 struct ath_common
*common
= ath9k_hw_common(ah
);
449 enum ath9k_int status
;
453 * The hardware is not ready/present, don't
454 * touch anything. Note this can happen early
455 * on if the IRQ is shared.
457 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
))
460 /* shared irq, not for us */
462 if (!ath9k_hw_intrpend(ah
))
465 if (test_bit(SC_OP_HW_RESET
, &sc
->sc_flags
)) {
466 ath9k_hw_kill_interrupts(ah
);
471 * Figure out the reason(s) for the interrupt. Note
472 * that the hal returns a pseudo-ISR that may include
473 * bits we haven't explicitly enabled so we mask the
474 * value to insure we only process bits we requested.
476 ath9k_hw_getisr(ah
, &status
); /* NB: clears ISR too */
477 status
&= ah
->imask
; /* discard unasked-for bits */
480 * If there are no status bits set, then this interrupt was not
481 * for me (should have been caught above).
486 /* Cache the status */
487 sc
->intrstatus
= status
;
489 if (status
& SCHED_INTR
)
492 #ifdef CONFIG_PM_SLEEP
493 if (status
& ATH9K_INT_BMISS
) {
494 if (atomic_read(&sc
->wow_sleep_proc_intr
) == 0) {
495 ath_dbg(common
, ANY
, "during WoW we got a BMISS\n");
496 atomic_inc(&sc
->wow_got_bmiss_intr
);
497 atomic_dec(&sc
->wow_sleep_proc_intr
);
499 ath_dbg(common
, INTERRUPT
, "beacon miss interrupt\n");
504 * If a FATAL or RXORN interrupt is received, we have to reset the
507 if ((status
& ATH9K_INT_FATAL
) || ((status
& ATH9K_INT_RXORN
) &&
508 !(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)))
511 if ((ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
) &&
512 (status
& ATH9K_INT_BB_WATCHDOG
)) {
514 spin_lock(&common
->cc_lock
);
515 ath_hw_cycle_counters_update(common
);
516 ar9003_hw_bb_watchdog_dbg_info(ah
);
517 spin_unlock(&common
->cc_lock
);
522 if (status
& ATH9K_INT_SWBA
)
523 tasklet_schedule(&sc
->bcon_tasklet
);
525 if (status
& ATH9K_INT_TXURN
)
526 ath9k_hw_updatetxtriglevel(ah
, true);
528 if (status
& ATH9K_INT_RXEOL
) {
529 ah
->imask
&= ~(ATH9K_INT_RXEOL
| ATH9K_INT_RXORN
);
530 ath9k_hw_set_interrupts(ah
);
533 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
534 if (status
& ATH9K_INT_TIM_TIMER
) {
535 if (ATH_DBG_WARN_ON_ONCE(sc
->ps_idle
))
537 /* Clear RxAbort bit so that we can
539 ath9k_setpower(sc
, ATH9K_PM_AWAKE
);
540 spin_lock(&sc
->sc_pm_lock
);
541 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
542 sc
->ps_flags
|= PS_WAIT_FOR_BEACON
;
543 spin_unlock(&sc
->sc_pm_lock
);
548 ath_debug_stat_interrupt(sc
, status
);
551 /* turn off every interrupt */
552 ath9k_hw_disable_interrupts(ah
);
553 tasklet_schedule(&sc
->intr_tq
);
561 static int ath_reset(struct ath_softc
*sc
, bool retry_tx
)
567 r
= ath_reset_internal(sc
, NULL
, retry_tx
);
571 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
572 if (ATH_TXQ_SETUP(sc
, i
)) {
573 spin_lock_bh(&sc
->tx
.txq
[i
].axq_lock
);
574 ath_txq_schedule(sc
, &sc
->tx
.txq
[i
]);
575 spin_unlock_bh(&sc
->tx
.txq
[i
].axq_lock
);
580 ath9k_ps_restore(sc
);
585 void ath9k_queue_reset(struct ath_softc
*sc
, enum ath_reset_type type
)
587 #ifdef CONFIG_ATH9K_DEBUGFS
588 RESET_STAT_INC(sc
, type
);
590 set_bit(SC_OP_HW_RESET
, &sc
->sc_flags
);
591 ieee80211_queue_work(sc
->hw
, &sc
->hw_reset_work
);
594 void ath_reset_work(struct work_struct
*work
)
596 struct ath_softc
*sc
= container_of(work
, struct ath_softc
, hw_reset_work
);
601 /**********************/
602 /* mac80211 callbacks */
603 /**********************/
605 static int ath9k_start(struct ieee80211_hw
*hw
)
607 struct ath_softc
*sc
= hw
->priv
;
608 struct ath_hw
*ah
= sc
->sc_ah
;
609 struct ath_common
*common
= ath9k_hw_common(ah
);
610 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
611 struct ath9k_channel
*init_channel
;
614 ath_dbg(common
, CONFIG
,
615 "Starting driver with initial channel: %d MHz\n",
616 curchan
->center_freq
);
619 mutex_lock(&sc
->mutex
);
621 init_channel
= ath9k_cmn_get_curchannel(hw
, ah
);
623 /* Reset SERDES registers */
624 ath9k_hw_configpcipowersave(ah
, false);
627 * The basic interface to setting the hardware in a good
628 * state is ``reset''. On return the hardware is known to
629 * be powered up and with interrupts disabled. This must
630 * be followed by initialization of the appropriate bits
631 * and then setup of the interrupt mask.
633 spin_lock_bh(&sc
->sc_pcu_lock
);
635 atomic_set(&ah
->intr_ref_cnt
, -1);
637 r
= ath9k_hw_reset(ah
, init_channel
, ah
->caldata
, false);
640 "Unable to reset hardware; reset status %d (freq %u MHz)\n",
641 r
, curchan
->center_freq
);
642 spin_unlock_bh(&sc
->sc_pcu_lock
);
646 /* Setup our intr mask. */
647 ah
->imask
= ATH9K_INT_TX
| ATH9K_INT_RXEOL
|
648 ATH9K_INT_RXORN
| ATH9K_INT_FATAL
|
651 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
)
652 ah
->imask
|= ATH9K_INT_RXHP
|
654 ATH9K_INT_BB_WATCHDOG
;
656 ah
->imask
|= ATH9K_INT_RX
;
658 ah
->imask
|= ATH9K_INT_GTT
;
660 if (ah
->caps
.hw_caps
& ATH9K_HW_CAP_HT
)
661 ah
->imask
|= ATH9K_INT_CST
;
665 clear_bit(SC_OP_INVALID
, &sc
->sc_flags
);
666 sc
->sc_ah
->is_monitoring
= false;
668 if (!ath_complete_reset(sc
, false)) {
670 spin_unlock_bh(&sc
->sc_pcu_lock
);
674 if (ah
->led_pin
>= 0) {
675 ath9k_hw_cfg_output(ah
, ah
->led_pin
,
676 AR_GPIO_OUTPUT_MUX_AS_OUTPUT
);
677 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 0);
681 * Reset key cache to sane defaults (all entries cleared) instead of
682 * semi-random values after suspend/resume.
684 ath9k_cmn_init_crypto(sc
->sc_ah
);
686 spin_unlock_bh(&sc
->sc_pcu_lock
);
688 if (ah
->caps
.pcie_lcr_extsync_en
&& common
->bus_ops
->extn_synch_en
)
689 common
->bus_ops
->extn_synch_en(common
);
692 mutex_unlock(&sc
->mutex
);
694 ath9k_ps_restore(sc
);
699 static void ath9k_tx(struct ieee80211_hw
*hw
,
700 struct ieee80211_tx_control
*control
,
703 struct ath_softc
*sc
= hw
->priv
;
704 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
705 struct ath_tx_control txctl
;
706 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
709 if (sc
->ps_enabled
) {
711 * mac80211 does not set PM field for normal data frames, so we
712 * need to update that based on the current PS mode.
714 if (ieee80211_is_data(hdr
->frame_control
) &&
715 !ieee80211_is_nullfunc(hdr
->frame_control
) &&
716 !ieee80211_has_pm(hdr
->frame_control
)) {
718 "Add PM=1 for a TX frame while in PS mode\n");
719 hdr
->frame_control
|= cpu_to_le16(IEEE80211_FCTL_PM
);
723 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_NETWORK_SLEEP
)) {
725 * We are using PS-Poll and mac80211 can request TX while in
726 * power save mode. Need to wake up hardware for the TX to be
727 * completed and if needed, also for RX of buffered frames.
730 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
731 if (!(sc
->sc_ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
))
732 ath9k_hw_setrxabort(sc
->sc_ah
, 0);
733 if (ieee80211_is_pspoll(hdr
->frame_control
)) {
735 "Sending PS-Poll to pick a buffered frame\n");
736 sc
->ps_flags
|= PS_WAIT_FOR_PSPOLL_DATA
;
738 ath_dbg(common
, PS
, "Wake up to complete TX\n");
739 sc
->ps_flags
|= PS_WAIT_FOR_TX_ACK
;
742 * The actual restore operation will happen only after
743 * the ps_flags bit is cleared. We are just dropping
744 * the ps_usecount here.
746 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
747 ath9k_ps_restore(sc
);
751 * Cannot tx while the hardware is in full sleep, it first needs a full
752 * chip reset to recover from that
754 if (unlikely(sc
->sc_ah
->power_mode
== ATH9K_PM_FULL_SLEEP
)) {
755 ath_err(common
, "TX while HW is in FULL_SLEEP mode\n");
759 memset(&txctl
, 0, sizeof(struct ath_tx_control
));
760 txctl
.txq
= sc
->tx
.txq_map
[skb_get_queue_mapping(skb
)];
761 txctl
.sta
= control
->sta
;
763 ath_dbg(common
, XMIT
, "transmitting packet, skb: %p\n", skb
);
765 if (ath_tx_start(hw
, skb
, &txctl
) != 0) {
766 ath_dbg(common
, XMIT
, "TX failed\n");
767 TX_STAT_INC(txctl
.txq
->axq_qnum
, txfailed
);
773 dev_kfree_skb_any(skb
);
776 static void ath9k_stop(struct ieee80211_hw
*hw
)
778 struct ath_softc
*sc
= hw
->priv
;
779 struct ath_hw
*ah
= sc
->sc_ah
;
780 struct ath_common
*common
= ath9k_hw_common(ah
);
783 mutex_lock(&sc
->mutex
);
786 del_timer_sync(&sc
->rx_poll_timer
);
788 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
789 ath_dbg(common
, ANY
, "Device not present\n");
790 mutex_unlock(&sc
->mutex
);
794 /* Ensure HW is awake when we try to shut it down. */
797 spin_lock_bh(&sc
->sc_pcu_lock
);
799 /* prevent tasklets to enable interrupts once we disable them */
800 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
802 /* make sure h/w will not generate any interrupt
803 * before setting the invalid flag. */
804 ath9k_hw_disable_interrupts(ah
);
806 spin_unlock_bh(&sc
->sc_pcu_lock
);
808 /* we can now sync irq and kill any running tasklets, since we already
809 * disabled interrupts and not holding a spin lock */
810 synchronize_irq(sc
->irq
);
811 tasklet_kill(&sc
->intr_tq
);
812 tasklet_kill(&sc
->bcon_tasklet
);
814 prev_idle
= sc
->ps_idle
;
817 spin_lock_bh(&sc
->sc_pcu_lock
);
819 if (ah
->led_pin
>= 0) {
820 ath9k_hw_set_gpio(ah
, ah
->led_pin
, 1);
821 ath9k_hw_cfg_gpio_input(ah
, ah
->led_pin
);
824 ath_prepare_reset(sc
, false, true);
827 dev_kfree_skb_any(sc
->rx
.frag
);
832 ah
->curchan
= ath9k_cmn_get_curchannel(hw
, ah
);
834 ath9k_hw_reset(ah
, ah
->curchan
, ah
->caldata
, false);
835 ath9k_hw_phy_disable(ah
);
837 ath9k_hw_configpcipowersave(ah
, true);
839 spin_unlock_bh(&sc
->sc_pcu_lock
);
841 ath9k_ps_restore(sc
);
843 set_bit(SC_OP_INVALID
, &sc
->sc_flags
);
844 sc
->ps_idle
= prev_idle
;
846 mutex_unlock(&sc
->mutex
);
848 ath_dbg(common
, CONFIG
, "Driver halt\n");
851 bool ath9k_uses_beacons(int type
)
854 case NL80211_IFTYPE_AP
:
855 case NL80211_IFTYPE_ADHOC
:
856 case NL80211_IFTYPE_MESH_POINT
:
863 static void ath9k_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
865 struct ath9k_vif_iter_data
*iter_data
= data
;
868 if (iter_data
->hw_macaddr
)
869 for (i
= 0; i
< ETH_ALEN
; i
++)
870 iter_data
->mask
[i
] &=
871 ~(iter_data
->hw_macaddr
[i
] ^ mac
[i
]);
874 case NL80211_IFTYPE_AP
:
877 case NL80211_IFTYPE_STATION
:
878 iter_data
->nstations
++;
880 case NL80211_IFTYPE_ADHOC
:
881 iter_data
->nadhocs
++;
883 case NL80211_IFTYPE_MESH_POINT
:
884 iter_data
->nmeshes
++;
886 case NL80211_IFTYPE_WDS
:
894 static void ath9k_sta_vif_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
896 struct ath_softc
*sc
= data
;
897 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
899 if (vif
->type
!= NL80211_IFTYPE_STATION
)
902 if (avp
->primary_sta_vif
)
903 ath9k_set_assoc_state(sc
, vif
);
906 /* Called with sc->mutex held. */
907 void ath9k_calculate_iter_data(struct ieee80211_hw
*hw
,
908 struct ieee80211_vif
*vif
,
909 struct ath9k_vif_iter_data
*iter_data
)
911 struct ath_softc
*sc
= hw
->priv
;
912 struct ath_hw
*ah
= sc
->sc_ah
;
913 struct ath_common
*common
= ath9k_hw_common(ah
);
916 * Use the hardware MAC address as reference, the hardware uses it
917 * together with the BSSID mask when matching addresses.
919 memset(iter_data
, 0, sizeof(*iter_data
));
920 iter_data
->hw_macaddr
= common
->macaddr
;
921 memset(&iter_data
->mask
, 0xff, ETH_ALEN
);
924 ath9k_vif_iter(iter_data
, vif
->addr
, vif
);
926 /* Get list of all active MAC addresses */
927 ieee80211_iterate_active_interfaces_atomic(sc
->hw
, ath9k_vif_iter
,
931 /* Called with sc->mutex held. */
932 static void ath9k_calculate_summary_state(struct ieee80211_hw
*hw
,
933 struct ieee80211_vif
*vif
)
935 struct ath_softc
*sc
= hw
->priv
;
936 struct ath_hw
*ah
= sc
->sc_ah
;
937 struct ath_common
*common
= ath9k_hw_common(ah
);
938 struct ath9k_vif_iter_data iter_data
;
939 enum nl80211_iftype old_opmode
= ah
->opmode
;
941 ath9k_calculate_iter_data(hw
, vif
, &iter_data
);
943 memcpy(common
->bssidmask
, iter_data
.mask
, ETH_ALEN
);
944 ath_hw_setbssidmask(common
);
946 if (iter_data
.naps
> 0) {
947 ath9k_hw_set_tsfadjust(ah
, true);
948 ah
->opmode
= NL80211_IFTYPE_AP
;
950 ath9k_hw_set_tsfadjust(ah
, false);
952 if (iter_data
.nmeshes
)
953 ah
->opmode
= NL80211_IFTYPE_MESH_POINT
;
954 else if (iter_data
.nwds
)
955 ah
->opmode
= NL80211_IFTYPE_AP
;
956 else if (iter_data
.nadhocs
)
957 ah
->opmode
= NL80211_IFTYPE_ADHOC
;
959 ah
->opmode
= NL80211_IFTYPE_STATION
;
962 ath9k_hw_setopmode(ah
);
964 if ((iter_data
.nstations
+ iter_data
.nadhocs
+ iter_data
.nmeshes
) > 0)
965 ah
->imask
|= ATH9K_INT_TSFOOR
;
967 ah
->imask
&= ~ATH9K_INT_TSFOOR
;
969 ath9k_hw_set_interrupts(ah
);
972 * If we are changing the opmode to STATION,
973 * a beacon sync needs to be done.
975 if (ah
->opmode
== NL80211_IFTYPE_STATION
&&
976 old_opmode
== NL80211_IFTYPE_AP
&&
977 test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
978 ieee80211_iterate_active_interfaces_atomic(sc
->hw
,
979 ath9k_sta_vif_iter
, sc
);
983 static int ath9k_add_interface(struct ieee80211_hw
*hw
,
984 struct ieee80211_vif
*vif
)
986 struct ath_softc
*sc
= hw
->priv
;
987 struct ath_hw
*ah
= sc
->sc_ah
;
988 struct ath_common
*common
= ath9k_hw_common(ah
);
990 mutex_lock(&sc
->mutex
);
992 ath_dbg(common
, CONFIG
, "Attach a VIF of type: %d\n", vif
->type
);
996 ath9k_calculate_summary_state(hw
, vif
);
997 ath9k_ps_restore(sc
);
999 if (ath9k_uses_beacons(vif
->type
))
1000 ath9k_beacon_assign_slot(sc
, vif
);
1002 mutex_unlock(&sc
->mutex
);
1006 static int ath9k_change_interface(struct ieee80211_hw
*hw
,
1007 struct ieee80211_vif
*vif
,
1008 enum nl80211_iftype new_type
,
1011 struct ath_softc
*sc
= hw
->priv
;
1012 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1014 ath_dbg(common
, CONFIG
, "Change Interface\n");
1015 mutex_lock(&sc
->mutex
);
1017 if (ath9k_uses_beacons(vif
->type
))
1018 ath9k_beacon_remove_slot(sc
, vif
);
1020 vif
->type
= new_type
;
1023 ath9k_ps_wakeup(sc
);
1024 ath9k_calculate_summary_state(hw
, vif
);
1025 ath9k_ps_restore(sc
);
1027 if (ath9k_uses_beacons(vif
->type
))
1028 ath9k_beacon_assign_slot(sc
, vif
);
1030 mutex_unlock(&sc
->mutex
);
1034 static void ath9k_remove_interface(struct ieee80211_hw
*hw
,
1035 struct ieee80211_vif
*vif
)
1037 struct ath_softc
*sc
= hw
->priv
;
1038 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1040 ath_dbg(common
, CONFIG
, "Detach Interface\n");
1042 mutex_lock(&sc
->mutex
);
1046 if (ath9k_uses_beacons(vif
->type
))
1047 ath9k_beacon_remove_slot(sc
, vif
);
1049 ath9k_ps_wakeup(sc
);
1050 ath9k_calculate_summary_state(hw
, NULL
);
1051 ath9k_ps_restore(sc
);
1053 mutex_unlock(&sc
->mutex
);
1056 static void ath9k_enable_ps(struct ath_softc
*sc
)
1058 struct ath_hw
*ah
= sc
->sc_ah
;
1059 struct ath_common
*common
= ath9k_hw_common(ah
);
1061 sc
->ps_enabled
= true;
1062 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1063 if ((ah
->imask
& ATH9K_INT_TIM_TIMER
) == 0) {
1064 ah
->imask
|= ATH9K_INT_TIM_TIMER
;
1065 ath9k_hw_set_interrupts(ah
);
1067 ath9k_hw_setrxabort(ah
, 1);
1069 ath_dbg(common
, PS
, "PowerSave enabled\n");
1072 static void ath9k_disable_ps(struct ath_softc
*sc
)
1074 struct ath_hw
*ah
= sc
->sc_ah
;
1075 struct ath_common
*common
= ath9k_hw_common(ah
);
1077 sc
->ps_enabled
= false;
1078 ath9k_hw_setpower(ah
, ATH9K_PM_AWAKE
);
1079 if (!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_AUTOSLEEP
)) {
1080 ath9k_hw_setrxabort(ah
, 0);
1081 sc
->ps_flags
&= ~(PS_WAIT_FOR_BEACON
|
1083 PS_WAIT_FOR_PSPOLL_DATA
|
1084 PS_WAIT_FOR_TX_ACK
);
1085 if (ah
->imask
& ATH9K_INT_TIM_TIMER
) {
1086 ah
->imask
&= ~ATH9K_INT_TIM_TIMER
;
1087 ath9k_hw_set_interrupts(ah
);
1090 ath_dbg(common
, PS
, "PowerSave disabled\n");
1093 static int ath9k_config(struct ieee80211_hw
*hw
, u32 changed
)
1095 struct ath_softc
*sc
= hw
->priv
;
1096 struct ath_hw
*ah
= sc
->sc_ah
;
1097 struct ath_common
*common
= ath9k_hw_common(ah
);
1098 struct ieee80211_conf
*conf
= &hw
->conf
;
1099 bool reset_channel
= false;
1101 ath9k_ps_wakeup(sc
);
1102 mutex_lock(&sc
->mutex
);
1104 if (changed
& IEEE80211_CONF_CHANGE_IDLE
) {
1105 sc
->ps_idle
= !!(conf
->flags
& IEEE80211_CONF_IDLE
);
1107 ath_cancel_work(sc
);
1108 ath9k_stop_btcoex(sc
);
1110 ath9k_start_btcoex(sc
);
1112 * The chip needs a reset to properly wake up from
1115 reset_channel
= ah
->chip_fullsleep
;
1120 * We just prepare to enable PS. We have to wait until our AP has
1121 * ACK'd our null data frame to disable RX otherwise we'll ignore
1122 * those ACKs and end up retransmitting the same null data frames.
1123 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode.
1125 if (changed
& IEEE80211_CONF_CHANGE_PS
) {
1126 unsigned long flags
;
1127 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1128 if (conf
->flags
& IEEE80211_CONF_PS
)
1129 ath9k_enable_ps(sc
);
1131 ath9k_disable_ps(sc
);
1132 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1135 if (changed
& IEEE80211_CONF_CHANGE_MONITOR
) {
1136 if (conf
->flags
& IEEE80211_CONF_MONITOR
) {
1137 ath_dbg(common
, CONFIG
, "Monitor mode is enabled\n");
1138 sc
->sc_ah
->is_monitoring
= true;
1140 ath_dbg(common
, CONFIG
, "Monitor mode is disabled\n");
1141 sc
->sc_ah
->is_monitoring
= false;
1145 if ((changed
& IEEE80211_CONF_CHANGE_CHANNEL
) || reset_channel
) {
1146 struct ieee80211_channel
*curchan
= hw
->conf
.channel
;
1147 int pos
= curchan
->hw_value
;
1149 unsigned long flags
;
1152 old_pos
= ah
->curchan
- &ah
->channels
[0];
1154 ath_dbg(common
, CONFIG
, "Set channel: %d MHz type: %d\n",
1155 curchan
->center_freq
, conf
->channel_type
);
1157 /* update survey stats for the old channel before switching */
1158 spin_lock_irqsave(&common
->cc_lock
, flags
);
1159 ath_update_survey_stats(sc
);
1160 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1163 * Preserve the current channel values, before updating
1166 if (ah
->curchan
&& (old_pos
== pos
))
1167 ath9k_hw_getnf(ah
, ah
->curchan
);
1169 ath9k_cmn_update_ichannel(&sc
->sc_ah
->channels
[pos
],
1170 curchan
, conf
->channel_type
);
1173 * If the operating channel changes, change the survey in-use flags
1175 * Reset the survey data for the new channel, unless we're switching
1176 * back to the operating channel from an off-channel operation.
1178 if (!(hw
->conf
.flags
& IEEE80211_CONF_OFFCHANNEL
) &&
1179 sc
->cur_survey
!= &sc
->survey
[pos
]) {
1182 sc
->cur_survey
->filled
&= ~SURVEY_INFO_IN_USE
;
1184 sc
->cur_survey
= &sc
->survey
[pos
];
1186 memset(sc
->cur_survey
, 0, sizeof(struct survey_info
));
1187 sc
->cur_survey
->filled
|= SURVEY_INFO_IN_USE
;
1188 } else if (!(sc
->survey
[pos
].filled
& SURVEY_INFO_IN_USE
)) {
1189 memset(&sc
->survey
[pos
], 0, sizeof(struct survey_info
));
1192 if (ath_set_channel(sc
, hw
, &sc
->sc_ah
->channels
[pos
]) < 0) {
1193 ath_err(common
, "Unable to set channel\n");
1194 mutex_unlock(&sc
->mutex
);
1195 ath9k_ps_restore(sc
);
1200 * The most recent snapshot of channel->noisefloor for the old
1201 * channel is only available after the hardware reset. Copy it to
1202 * the survey stats now.
1205 ath_update_survey_nf(sc
, old_pos
);
1208 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1209 ath_dbg(common
, CONFIG
, "Set power: %d\n", conf
->power_level
);
1210 sc
->config
.txpowlimit
= 2 * conf
->power_level
;
1211 ath9k_cmn_update_txpow(ah
, sc
->curtxpow
,
1212 sc
->config
.txpowlimit
, &sc
->curtxpow
);
1215 mutex_unlock(&sc
->mutex
);
1216 ath9k_ps_restore(sc
);
1221 #define SUPPORTED_FILTERS \
1222 (FIF_PROMISC_IN_BSS | \
1227 FIF_BCN_PRBRESP_PROMISC | \
1231 /* FIXME: sc->sc_full_reset ? */
1232 static void ath9k_configure_filter(struct ieee80211_hw
*hw
,
1233 unsigned int changed_flags
,
1234 unsigned int *total_flags
,
1237 struct ath_softc
*sc
= hw
->priv
;
1240 changed_flags
&= SUPPORTED_FILTERS
;
1241 *total_flags
&= SUPPORTED_FILTERS
;
1243 sc
->rx
.rxfilter
= *total_flags
;
1244 ath9k_ps_wakeup(sc
);
1245 rfilt
= ath_calcrxfilter(sc
);
1246 ath9k_hw_setrxfilter(sc
->sc_ah
, rfilt
);
1247 ath9k_ps_restore(sc
);
1249 ath_dbg(ath9k_hw_common(sc
->sc_ah
), CONFIG
, "Set HW RX filter: 0x%x\n",
1253 static int ath9k_sta_add(struct ieee80211_hw
*hw
,
1254 struct ieee80211_vif
*vif
,
1255 struct ieee80211_sta
*sta
)
1257 struct ath_softc
*sc
= hw
->priv
;
1258 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1259 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1260 struct ieee80211_key_conf ps_key
= { };
1262 ath_node_attach(sc
, sta
, vif
);
1264 if (vif
->type
!= NL80211_IFTYPE_AP
&&
1265 vif
->type
!= NL80211_IFTYPE_AP_VLAN
)
1268 an
->ps_key
= ath_key_config(common
, vif
, sta
, &ps_key
);
1273 static void ath9k_del_ps_key(struct ath_softc
*sc
,
1274 struct ieee80211_vif
*vif
,
1275 struct ieee80211_sta
*sta
)
1277 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1278 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1279 struct ieee80211_key_conf ps_key
= { .hw_key_idx
= an
->ps_key
};
1284 ath_key_delete(common
, &ps_key
);
1287 static int ath9k_sta_remove(struct ieee80211_hw
*hw
,
1288 struct ieee80211_vif
*vif
,
1289 struct ieee80211_sta
*sta
)
1291 struct ath_softc
*sc
= hw
->priv
;
1293 ath9k_del_ps_key(sc
, vif
, sta
);
1294 ath_node_detach(sc
, sta
);
1299 static void ath9k_sta_notify(struct ieee80211_hw
*hw
,
1300 struct ieee80211_vif
*vif
,
1301 enum sta_notify_cmd cmd
,
1302 struct ieee80211_sta
*sta
)
1304 struct ath_softc
*sc
= hw
->priv
;
1305 struct ath_node
*an
= (struct ath_node
*) sta
->drv_priv
;
1307 if (!sta
->ht_cap
.ht_supported
)
1311 case STA_NOTIFY_SLEEP
:
1312 an
->sleeping
= true;
1313 ath_tx_aggr_sleep(sta
, sc
, an
);
1315 case STA_NOTIFY_AWAKE
:
1316 an
->sleeping
= false;
1317 ath_tx_aggr_wakeup(sc
, an
);
1322 static int ath9k_conf_tx(struct ieee80211_hw
*hw
,
1323 struct ieee80211_vif
*vif
, u16 queue
,
1324 const struct ieee80211_tx_queue_params
*params
)
1326 struct ath_softc
*sc
= hw
->priv
;
1327 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1328 struct ath_txq
*txq
;
1329 struct ath9k_tx_queue_info qi
;
1332 if (queue
>= WME_NUM_AC
)
1335 txq
= sc
->tx
.txq_map
[queue
];
1337 ath9k_ps_wakeup(sc
);
1338 mutex_lock(&sc
->mutex
);
1340 memset(&qi
, 0, sizeof(struct ath9k_tx_queue_info
));
1342 qi
.tqi_aifs
= params
->aifs
;
1343 qi
.tqi_cwmin
= params
->cw_min
;
1344 qi
.tqi_cwmax
= params
->cw_max
;
1345 qi
.tqi_burstTime
= params
->txop
* 32;
1347 ath_dbg(common
, CONFIG
,
1348 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1349 queue
, txq
->axq_qnum
, params
->aifs
, params
->cw_min
,
1350 params
->cw_max
, params
->txop
);
1352 ath_update_max_aggr_framelen(sc
, queue
, qi
.tqi_burstTime
);
1353 ret
= ath_txq_update(sc
, txq
->axq_qnum
, &qi
);
1355 ath_err(common
, "TXQ Update failed\n");
1357 mutex_unlock(&sc
->mutex
);
1358 ath9k_ps_restore(sc
);
1363 static int ath9k_set_key(struct ieee80211_hw
*hw
,
1364 enum set_key_cmd cmd
,
1365 struct ieee80211_vif
*vif
,
1366 struct ieee80211_sta
*sta
,
1367 struct ieee80211_key_conf
*key
)
1369 struct ath_softc
*sc
= hw
->priv
;
1370 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1373 if (ath9k_modparam_nohwcrypt
)
1376 if ((vif
->type
== NL80211_IFTYPE_ADHOC
||
1377 vif
->type
== NL80211_IFTYPE_MESH_POINT
) &&
1378 (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
||
1379 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
) &&
1380 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
1382 * For now, disable hw crypto for the RSN IBSS group keys. This
1383 * could be optimized in the future to use a modified key cache
1384 * design to support per-STA RX GTK, but until that gets
1385 * implemented, use of software crypto for group addressed
1386 * frames is a acceptable to allow RSN IBSS to be used.
1391 mutex_lock(&sc
->mutex
);
1392 ath9k_ps_wakeup(sc
);
1393 ath_dbg(common
, CONFIG
, "Set HW Key\n");
1398 ath9k_del_ps_key(sc
, vif
, sta
);
1400 ret
= ath_key_config(common
, vif
, sta
, key
);
1402 key
->hw_key_idx
= ret
;
1403 /* push IV and Michael MIC generation to stack */
1404 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
1405 if (key
->cipher
== WLAN_CIPHER_SUITE_TKIP
)
1406 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
1407 if (sc
->sc_ah
->sw_mgmt_crypto
&&
1408 key
->cipher
== WLAN_CIPHER_SUITE_CCMP
)
1409 key
->flags
|= IEEE80211_KEY_FLAG_SW_MGMT_TX
;
1414 ath_key_delete(common
, key
);
1420 ath9k_ps_restore(sc
);
1421 mutex_unlock(&sc
->mutex
);
1426 static void ath9k_set_assoc_state(struct ath_softc
*sc
,
1427 struct ieee80211_vif
*vif
)
1429 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1430 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1431 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1432 unsigned long flags
;
1434 set_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1435 avp
->primary_sta_vif
= true;
1438 * Set the AID, BSSID and do beacon-sync only when
1439 * the HW opmode is STATION.
1441 * But the primary bit is set above in any case.
1443 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_STATION
)
1446 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1447 common
->curaid
= bss_conf
->aid
;
1448 ath9k_hw_write_associd(sc
->sc_ah
);
1450 sc
->last_rssi
= ATH_RSSI_DUMMY_MARKER
;
1451 sc
->sc_ah
->stats
.avgbrssi
= ATH_RSSI_DUMMY_MARKER
;
1453 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
1454 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
1455 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
1457 ath_dbg(common
, CONFIG
,
1458 "Primary Station interface: %pM, BSSID: %pM\n",
1459 vif
->addr
, common
->curbssid
);
1462 static void ath9k_bss_assoc_iter(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
1464 struct ath_softc
*sc
= data
;
1465 struct ieee80211_bss_conf
*bss_conf
= &vif
->bss_conf
;
1467 if (test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
))
1470 if (bss_conf
->assoc
)
1471 ath9k_set_assoc_state(sc
, vif
);
1474 static void ath9k_bss_info_changed(struct ieee80211_hw
*hw
,
1475 struct ieee80211_vif
*vif
,
1476 struct ieee80211_bss_conf
*bss_conf
,
1480 (BSS_CHANGED_ASSOC | \
1481 BSS_CHANGED_IBSS | \
1482 BSS_CHANGED_BEACON_ENABLED)
1484 struct ath_softc
*sc
= hw
->priv
;
1485 struct ath_hw
*ah
= sc
->sc_ah
;
1486 struct ath_common
*common
= ath9k_hw_common(ah
);
1487 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
1490 ath9k_ps_wakeup(sc
);
1491 mutex_lock(&sc
->mutex
);
1493 if (changed
& BSS_CHANGED_ASSOC
) {
1494 ath_dbg(common
, CONFIG
, "BSSID %pM Changed ASSOC %d\n",
1495 bss_conf
->bssid
, bss_conf
->assoc
);
1497 if (avp
->primary_sta_vif
&& !bss_conf
->assoc
) {
1498 clear_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
);
1499 avp
->primary_sta_vif
= false;
1501 if (ah
->opmode
== NL80211_IFTYPE_STATION
)
1502 clear_bit(SC_OP_BEACONS
, &sc
->sc_flags
);
1505 ieee80211_iterate_active_interfaces_atomic(sc
->hw
,
1506 ath9k_bss_assoc_iter
, sc
);
1508 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
) &&
1509 ah
->opmode
== NL80211_IFTYPE_STATION
) {
1510 memset(common
->curbssid
, 0, ETH_ALEN
);
1512 ath9k_hw_write_associd(sc
->sc_ah
);
1516 if (changed
& BSS_CHANGED_IBSS
) {
1517 memcpy(common
->curbssid
, bss_conf
->bssid
, ETH_ALEN
);
1518 common
->curaid
= bss_conf
->aid
;
1519 ath9k_hw_write_associd(sc
->sc_ah
);
1522 if ((changed
& BSS_CHANGED_BEACON_ENABLED
) ||
1523 (changed
& BSS_CHANGED_BEACON_INT
)) {
1524 if (ah
->opmode
== NL80211_IFTYPE_AP
&&
1525 bss_conf
->enable_beacon
)
1526 ath9k_set_tsfadjust(sc
, vif
);
1527 if (ath9k_allow_beacon_config(sc
, vif
))
1528 ath9k_beacon_config(sc
, vif
, changed
);
1531 if (changed
& BSS_CHANGED_ERP_SLOT
) {
1532 if (bss_conf
->use_short_slot
)
1536 if (vif
->type
== NL80211_IFTYPE_AP
) {
1538 * Defer update, so that connected stations can adjust
1539 * their settings at the same time.
1540 * See beacon.c for more details
1542 sc
->beacon
.slottime
= slottime
;
1543 sc
->beacon
.updateslot
= UPDATE
;
1545 ah
->slottime
= slottime
;
1546 ath9k_hw_init_global_settings(ah
);
1550 if (changed
& CHECK_ANI
)
1553 mutex_unlock(&sc
->mutex
);
1554 ath9k_ps_restore(sc
);
1559 static u64
ath9k_get_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1561 struct ath_softc
*sc
= hw
->priv
;
1564 mutex_lock(&sc
->mutex
);
1565 ath9k_ps_wakeup(sc
);
1566 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
1567 ath9k_ps_restore(sc
);
1568 mutex_unlock(&sc
->mutex
);
1573 static void ath9k_set_tsf(struct ieee80211_hw
*hw
,
1574 struct ieee80211_vif
*vif
,
1577 struct ath_softc
*sc
= hw
->priv
;
1579 mutex_lock(&sc
->mutex
);
1580 ath9k_ps_wakeup(sc
);
1581 ath9k_hw_settsf64(sc
->sc_ah
, tsf
);
1582 ath9k_ps_restore(sc
);
1583 mutex_unlock(&sc
->mutex
);
1586 static void ath9k_reset_tsf(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
)
1588 struct ath_softc
*sc
= hw
->priv
;
1590 mutex_lock(&sc
->mutex
);
1592 ath9k_ps_wakeup(sc
);
1593 ath9k_hw_reset_tsf(sc
->sc_ah
);
1594 ath9k_ps_restore(sc
);
1596 mutex_unlock(&sc
->mutex
);
1599 static int ath9k_ampdu_action(struct ieee80211_hw
*hw
,
1600 struct ieee80211_vif
*vif
,
1601 enum ieee80211_ampdu_mlme_action action
,
1602 struct ieee80211_sta
*sta
,
1603 u16 tid
, u16
*ssn
, u8 buf_size
)
1605 struct ath_softc
*sc
= hw
->priv
;
1611 case IEEE80211_AMPDU_RX_START
:
1613 case IEEE80211_AMPDU_RX_STOP
:
1615 case IEEE80211_AMPDU_TX_START
:
1616 ath9k_ps_wakeup(sc
);
1617 ret
= ath_tx_aggr_start(sc
, sta
, tid
, ssn
);
1619 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1620 ath9k_ps_restore(sc
);
1622 case IEEE80211_AMPDU_TX_STOP
:
1623 ath9k_ps_wakeup(sc
);
1624 ath_tx_aggr_stop(sc
, sta
, tid
);
1625 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1626 ath9k_ps_restore(sc
);
1628 case IEEE80211_AMPDU_TX_OPERATIONAL
:
1629 ath9k_ps_wakeup(sc
);
1630 ath_tx_aggr_resume(sc
, sta
, tid
);
1631 ath9k_ps_restore(sc
);
1634 ath_err(ath9k_hw_common(sc
->sc_ah
), "Unknown AMPDU action\n");
1642 static int ath9k_get_survey(struct ieee80211_hw
*hw
, int idx
,
1643 struct survey_info
*survey
)
1645 struct ath_softc
*sc
= hw
->priv
;
1646 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
1647 struct ieee80211_supported_band
*sband
;
1648 struct ieee80211_channel
*chan
;
1649 unsigned long flags
;
1652 spin_lock_irqsave(&common
->cc_lock
, flags
);
1654 ath_update_survey_stats(sc
);
1656 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
];
1657 if (sband
&& idx
>= sband
->n_channels
) {
1658 idx
-= sband
->n_channels
;
1663 sband
= hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
];
1665 if (!sband
|| idx
>= sband
->n_channels
) {
1666 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1670 chan
= &sband
->channels
[idx
];
1671 pos
= chan
->hw_value
;
1672 memcpy(survey
, &sc
->survey
[pos
], sizeof(*survey
));
1673 survey
->channel
= chan
;
1674 spin_unlock_irqrestore(&common
->cc_lock
, flags
);
1679 static void ath9k_set_coverage_class(struct ieee80211_hw
*hw
, u8 coverage_class
)
1681 struct ath_softc
*sc
= hw
->priv
;
1682 struct ath_hw
*ah
= sc
->sc_ah
;
1684 mutex_lock(&sc
->mutex
);
1685 ah
->coverage_class
= coverage_class
;
1687 ath9k_ps_wakeup(sc
);
1688 ath9k_hw_init_global_settings(ah
);
1689 ath9k_ps_restore(sc
);
1691 mutex_unlock(&sc
->mutex
);
1694 static void ath9k_flush(struct ieee80211_hw
*hw
, bool drop
)
1696 struct ath_softc
*sc
= hw
->priv
;
1697 struct ath_hw
*ah
= sc
->sc_ah
;
1698 struct ath_common
*common
= ath9k_hw_common(ah
);
1699 int timeout
= 200; /* ms */
1703 mutex_lock(&sc
->mutex
);
1704 cancel_delayed_work_sync(&sc
->tx_complete_work
);
1706 if (ah
->ah_flags
& AH_UNPLUGGED
) {
1707 ath_dbg(common
, ANY
, "Device has been unplugged!\n");
1708 mutex_unlock(&sc
->mutex
);
1712 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
1713 ath_dbg(common
, ANY
, "Device not present\n");
1714 mutex_unlock(&sc
->mutex
);
1718 for (j
= 0; j
< timeout
; j
++) {
1722 usleep_range(1000, 2000);
1724 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1725 if (!ATH_TXQ_SETUP(sc
, i
))
1728 npend
= ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]);
1739 ath9k_ps_wakeup(sc
);
1740 spin_lock_bh(&sc
->sc_pcu_lock
);
1741 drain_txq
= ath_drain_all_txq(sc
, false);
1742 spin_unlock_bh(&sc
->sc_pcu_lock
);
1745 ath_reset(sc
, false);
1747 ath9k_ps_restore(sc
);
1748 ieee80211_wake_queues(hw
);
1751 ieee80211_queue_delayed_work(hw
, &sc
->tx_complete_work
, 0);
1752 mutex_unlock(&sc
->mutex
);
1755 static bool ath9k_tx_frames_pending(struct ieee80211_hw
*hw
)
1757 struct ath_softc
*sc
= hw
->priv
;
1760 for (i
= 0; i
< ATH9K_NUM_TX_QUEUES
; i
++) {
1761 if (!ATH_TXQ_SETUP(sc
, i
))
1764 if (ath9k_has_pending_frames(sc
, &sc
->tx
.txq
[i
]))
1770 static int ath9k_tx_last_beacon(struct ieee80211_hw
*hw
)
1772 struct ath_softc
*sc
= hw
->priv
;
1773 struct ath_hw
*ah
= sc
->sc_ah
;
1774 struct ieee80211_vif
*vif
;
1775 struct ath_vif
*avp
;
1777 struct ath_tx_status ts
;
1778 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
1781 vif
= sc
->beacon
.bslot
[0];
1785 if (!vif
->bss_conf
.enable_beacon
)
1788 avp
= (void *)vif
->drv_priv
;
1790 if (!sc
->beacon
.tx_processed
&& !edma
) {
1791 tasklet_disable(&sc
->bcon_tasklet
);
1794 if (!bf
|| !bf
->bf_mpdu
)
1797 status
= ath9k_hw_txprocdesc(ah
, bf
->bf_desc
, &ts
);
1798 if (status
== -EINPROGRESS
)
1801 sc
->beacon
.tx_processed
= true;
1802 sc
->beacon
.tx_last
= !(ts
.ts_status
& ATH9K_TXERR_MASK
);
1805 tasklet_enable(&sc
->bcon_tasklet
);
1808 return sc
->beacon
.tx_last
;
1811 static int ath9k_get_stats(struct ieee80211_hw
*hw
,
1812 struct ieee80211_low_level_stats
*stats
)
1814 struct ath_softc
*sc
= hw
->priv
;
1815 struct ath_hw
*ah
= sc
->sc_ah
;
1816 struct ath9k_mib_stats
*mib_stats
= &ah
->ah_mibStats
;
1818 stats
->dot11ACKFailureCount
= mib_stats
->ackrcv_bad
;
1819 stats
->dot11RTSFailureCount
= mib_stats
->rts_bad
;
1820 stats
->dot11FCSErrorCount
= mib_stats
->fcs_bad
;
1821 stats
->dot11RTSSuccessCount
= mib_stats
->rts_good
;
1825 static u32
fill_chainmask(u32 cap
, u32
new)
1830 for (i
= 0; cap
&& new; i
++, cap
>>= 1) {
1831 if (!(cap
& BIT(0)))
1843 static bool validate_antenna_mask(struct ath_hw
*ah
, u32 val
)
1845 switch (val
& 0x7) {
1851 return (ah
->caps
.rx_chainmask
== 1);
1857 static int ath9k_set_antenna(struct ieee80211_hw
*hw
, u32 tx_ant
, u32 rx_ant
)
1859 struct ath_softc
*sc
= hw
->priv
;
1860 struct ath_hw
*ah
= sc
->sc_ah
;
1862 if (ah
->caps
.rx_chainmask
!= 1)
1865 if (!validate_antenna_mask(ah
, rx_ant
) || !tx_ant
)
1868 sc
->ant_rx
= rx_ant
;
1869 sc
->ant_tx
= tx_ant
;
1871 if (ah
->caps
.rx_chainmask
== 1)
1874 /* AR9100 runs into calibration issues if not all rx chains are enabled */
1875 if (AR_SREV_9100(ah
))
1876 ah
->rxchainmask
= 0x7;
1878 ah
->rxchainmask
= fill_chainmask(ah
->caps
.rx_chainmask
, rx_ant
);
1880 ah
->txchainmask
= fill_chainmask(ah
->caps
.tx_chainmask
, tx_ant
);
1881 ath9k_reload_chainmask_settings(sc
);
1886 static int ath9k_get_antenna(struct ieee80211_hw
*hw
, u32
*tx_ant
, u32
*rx_ant
)
1888 struct ath_softc
*sc
= hw
->priv
;
1890 *tx_ant
= sc
->ant_tx
;
1891 *rx_ant
= sc
->ant_rx
;
1895 #ifdef CONFIG_ATH9K_DEBUGFS
1897 /* Ethtool support for get-stats */
1899 #define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
1900 static const char ath9k_gstrings_stats
[][ETH_GSTRING_LEN
] = {
1907 AMKSTR(d_tx_mpdus_queued
),
1908 AMKSTR(d_tx_mpdus_completed
),
1909 AMKSTR(d_tx_mpdu_xretries
),
1910 AMKSTR(d_tx_aggregates
),
1911 AMKSTR(d_tx_ampdus_queued_hw
),
1912 AMKSTR(d_tx_ampdus_queued_sw
),
1913 AMKSTR(d_tx_ampdus_completed
),
1914 AMKSTR(d_tx_ampdu_retries
),
1915 AMKSTR(d_tx_ampdu_xretries
),
1916 AMKSTR(d_tx_fifo_underrun
),
1917 AMKSTR(d_tx_op_exceeded
),
1918 AMKSTR(d_tx_timer_expiry
),
1919 AMKSTR(d_tx_desc_cfg_err
),
1920 AMKSTR(d_tx_data_underrun
),
1921 AMKSTR(d_tx_delim_underrun
),
1923 "d_rx_decrypt_crc_err",
1926 "d_rx_pre_delim_crc_err",
1927 "d_rx_post_delim_crc_err",
1928 "d_rx_decrypt_busy_err",
1930 "d_rx_phyerr_radar",
1931 "d_rx_phyerr_ofdm_timing",
1932 "d_rx_phyerr_cck_timing",
1935 #define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
1937 static void ath9k_get_et_strings(struct ieee80211_hw
*hw
,
1938 struct ieee80211_vif
*vif
,
1941 if (sset
== ETH_SS_STATS
)
1942 memcpy(data
, *ath9k_gstrings_stats
,
1943 sizeof(ath9k_gstrings_stats
));
1946 static int ath9k_get_et_sset_count(struct ieee80211_hw
*hw
,
1947 struct ieee80211_vif
*vif
, int sset
)
1949 if (sset
== ETH_SS_STATS
)
1950 return ATH9K_SSTATS_LEN
;
1954 #define PR_QNUM(_n) (sc->tx.txq_map[_n]->axq_qnum)
1955 #define AWDATA(elem) \
1957 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem; \
1958 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem; \
1959 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem; \
1960 data[i++] = sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem; \
1963 #define AWDATA_RX(elem) \
1965 data[i++] = sc->debug.stats.rxstats.elem; \
1968 static void ath9k_get_et_stats(struct ieee80211_hw
*hw
,
1969 struct ieee80211_vif
*vif
,
1970 struct ethtool_stats
*stats
, u64
*data
)
1972 struct ath_softc
*sc
= hw
->priv
;
1975 data
[i
++] = (sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BE
)].tx_pkts_all
+
1976 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BK
)].tx_pkts_all
+
1977 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VI
)].tx_pkts_all
+
1978 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VO
)].tx_pkts_all
);
1979 data
[i
++] = (sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BE
)].tx_bytes_all
+
1980 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_BK
)].tx_bytes_all
+
1981 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VI
)].tx_bytes_all
+
1982 sc
->debug
.stats
.txstats
[PR_QNUM(WME_AC_VO
)].tx_bytes_all
);
1983 AWDATA_RX(rx_pkts_all
);
1984 AWDATA_RX(rx_bytes_all
);
1986 AWDATA(tx_pkts_all
);
1987 AWDATA(tx_bytes_all
);
1992 AWDATA(a_queued_hw
);
1993 AWDATA(a_queued_sw
);
1994 AWDATA(a_completed
);
1997 AWDATA(fifo_underrun
);
2000 AWDATA(desc_cfg_err
);
2001 AWDATA(data_underrun
);
2002 AWDATA(delim_underrun
);
2004 AWDATA_RX(decrypt_crc_err
);
2007 AWDATA_RX(pre_delim_crc_err
);
2008 AWDATA_RX(post_delim_crc_err
);
2009 AWDATA_RX(decrypt_busy_err
);
2011 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_RADAR
]);
2012 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_OFDM_TIMING
]);
2013 AWDATA_RX(phy_err_stats
[ATH9K_PHYERR_CCK_TIMING
]);
2015 WARN_ON(i
!= ATH9K_SSTATS_LEN
);
2018 /* End of ethtool get-stats functions */
2023 #ifdef CONFIG_PM_SLEEP
2025 static void ath9k_wow_map_triggers(struct ath_softc
*sc
,
2026 struct cfg80211_wowlan
*wowlan
,
2029 if (wowlan
->disconnect
)
2030 *wow_triggers
|= AH_WOW_LINK_CHANGE
|
2032 if (wowlan
->magic_pkt
)
2033 *wow_triggers
|= AH_WOW_MAGIC_PATTERN_EN
;
2035 if (wowlan
->n_patterns
)
2036 *wow_triggers
|= AH_WOW_USER_PATTERN_EN
;
2038 sc
->wow_enabled
= *wow_triggers
;
2042 static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc
*sc
)
2044 struct ath_hw
*ah
= sc
->sc_ah
;
2045 struct ath_common
*common
= ath9k_hw_common(ah
);
2046 struct ath9k_hw_capabilities
*pcaps
= &ah
->caps
;
2047 int pattern_count
= 0;
2049 u8 dis_deauth_pattern
[MAX_PATTERN_SIZE
];
2050 u8 dis_deauth_mask
[MAX_PATTERN_SIZE
];
2052 memset(dis_deauth_pattern
, 0, MAX_PATTERN_SIZE
);
2053 memset(dis_deauth_mask
, 0, MAX_PATTERN_SIZE
);
2056 * Create Dissassociate / Deauthenticate packet filter
2058 * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
2059 * +--------------+----------+---------+--------+--------+----
2060 * + Frame Control+ Duration + DA + SA + BSSID +
2061 * +--------------+----------+---------+--------+--------+----
2063 * The above is the management frame format for disassociate/
2064 * deauthenticate pattern, from this we need to match the first byte
2065 * of 'Frame Control' and DA, SA, and BSSID fields
2066 * (skipping 2nd byte of FC and Duration feild.
2068 * Disassociate pattern
2069 * --------------------
2070 * Frame control = 00 00 1010
2071 * DA, SA, BSSID = x:x:x:x:x:x
2072 * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2073 * | x:x:x:x:x:x -- 22 bytes
2075 * Deauthenticate pattern
2076 * ----------------------
2077 * Frame control = 00 00 1100
2078 * DA, SA, BSSID = x:x:x:x:x:x
2079 * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x
2080 * | x:x:x:x:x:x -- 22 bytes
2083 /* Create Disassociate Pattern first */
2087 /* Fill out the mask with all FF's */
2089 for (i
= 0; i
< MAX_PATTERN_MASK_SIZE
; i
++)
2090 dis_deauth_mask
[i
] = 0xff;
2092 /* copy the first byte of frame control field */
2093 dis_deauth_pattern
[byte_cnt
] = 0xa0;
2096 /* skip 2nd byte of frame control and Duration field */
2100 * need not match the destination mac address, it can be a broadcast
2101 * mac address or an unicast to this station
2105 /* copy the source mac address */
2106 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2110 /* copy the bssid, its same as the source mac address */
2112 memcpy((dis_deauth_pattern
+ byte_cnt
), common
->curbssid
, ETH_ALEN
);
2114 /* Create Disassociate pattern mask */
2116 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_EXACT
) {
2118 if (pcaps
->hw_caps
& ATH9K_HW_WOW_PATTERN_MATCH_DWORD
) {
2120 * for AR9280, because of hardware limitation, the
2121 * first 4 bytes have to be matched for all patterns.
2122 * the mask for disassociation and de-auth pattern
2123 * matching need to enable the first 4 bytes.
2124 * also the duration field needs to be filled.
2126 dis_deauth_mask
[0] = 0xf0;
2129 * fill in duration field
2130 FIXME: what is the exact value ?
2132 dis_deauth_pattern
[2] = 0xff;
2133 dis_deauth_pattern
[3] = 0xff;
2135 dis_deauth_mask
[0] = 0xfe;
2138 dis_deauth_mask
[1] = 0x03;
2139 dis_deauth_mask
[2] = 0xc0;
2141 dis_deauth_mask
[0] = 0xef;
2142 dis_deauth_mask
[1] = 0x3f;
2143 dis_deauth_mask
[2] = 0x00;
2144 dis_deauth_mask
[3] = 0xfc;
2147 ath_dbg(common
, WOW
, "Adding disassoc/deauth patterns for WoW\n");
2149 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2150 pattern_count
, byte_cnt
);
2154 * for de-authenticate pattern, only the first byte of the frame
2155 * control field gets changed from 0xA0 to 0xC0
2157 dis_deauth_pattern
[0] = 0xC0;
2159 ath9k_hw_wow_apply_pattern(ah
, dis_deauth_pattern
, dis_deauth_mask
,
2160 pattern_count
, byte_cnt
);
2164 static void ath9k_wow_add_pattern(struct ath_softc
*sc
,
2165 struct cfg80211_wowlan
*wowlan
)
2167 struct ath_hw
*ah
= sc
->sc_ah
;
2168 struct ath9k_wow_pattern
*wow_pattern
= NULL
;
2169 struct cfg80211_wowlan_trig_pkt_pattern
*patterns
= wowlan
->patterns
;
2173 if (!wowlan
->n_patterns
)
2177 * Add the new user configured patterns
2179 for (i
= 0; i
< wowlan
->n_patterns
; i
++) {
2181 wow_pattern
= kzalloc(sizeof(*wow_pattern
), GFP_KERNEL
);
2187 * TODO: convert the generic user space pattern to
2188 * appropriate chip specific/802.11 pattern.
2191 mask_len
= DIV_ROUND_UP(wowlan
->patterns
[i
].pattern_len
, 8);
2192 memset(wow_pattern
->pattern_bytes
, 0, MAX_PATTERN_SIZE
);
2193 memset(wow_pattern
->mask_bytes
, 0, MAX_PATTERN_SIZE
);
2194 memcpy(wow_pattern
->pattern_bytes
, patterns
[i
].pattern
,
2195 patterns
[i
].pattern_len
);
2196 memcpy(wow_pattern
->mask_bytes
, patterns
[i
].mask
, mask_len
);
2197 wow_pattern
->pattern_len
= patterns
[i
].pattern_len
;
2200 * just need to take care of deauth and disssoc pattern,
2201 * make sure we don't overwrite them.
2204 ath9k_hw_wow_apply_pattern(ah
, wow_pattern
->pattern_bytes
,
2205 wow_pattern
->mask_bytes
,
2207 wow_pattern
->pattern_len
);
2214 static int ath9k_suspend(struct ieee80211_hw
*hw
,
2215 struct cfg80211_wowlan
*wowlan
)
2217 struct ath_softc
*sc
= hw
->priv
;
2218 struct ath_hw
*ah
= sc
->sc_ah
;
2219 struct ath_common
*common
= ath9k_hw_common(ah
);
2220 u32 wow_triggers_enabled
= 0;
2223 mutex_lock(&sc
->mutex
);
2225 ath_cancel_work(sc
);
2227 del_timer_sync(&sc
->rx_poll_timer
);
2229 if (test_bit(SC_OP_INVALID
, &sc
->sc_flags
)) {
2230 ath_dbg(common
, ANY
, "Device not present\n");
2235 if (WARN_ON(!wowlan
)) {
2236 ath_dbg(common
, WOW
, "None of the WoW triggers enabled\n");
2241 if (!device_can_wakeup(sc
->dev
)) {
2242 ath_dbg(common
, WOW
, "device_can_wakeup failed, WoW is not enabled\n");
2248 * none of the sta vifs are associated
2249 * and we are not currently handling multivif
2250 * cases, for instance we have to seperately
2251 * configure 'keep alive frame' for each
2255 if (!test_bit(SC_OP_PRIM_STA_VIF
, &sc
->sc_flags
)) {
2256 ath_dbg(common
, WOW
, "None of the STA vifs are associated\n");
2261 if (sc
->nvifs
> 1) {
2262 ath_dbg(common
, WOW
, "WoW for multivif is not yet supported\n");
2267 ath9k_wow_map_triggers(sc
, wowlan
, &wow_triggers_enabled
);
2269 ath_dbg(common
, WOW
, "WoW triggers enabled 0x%x\n",
2270 wow_triggers_enabled
);
2272 ath9k_ps_wakeup(sc
);
2274 ath9k_stop_btcoex(sc
);
2277 * Enable wake up on recieving disassoc/deauth
2280 ath9k_wow_add_disassoc_deauth_pattern(sc
);
2282 if (wow_triggers_enabled
& AH_WOW_USER_PATTERN_EN
)
2283 ath9k_wow_add_pattern(sc
, wowlan
);
2285 spin_lock_bh(&sc
->sc_pcu_lock
);
2287 * To avoid false wake, we enable beacon miss interrupt only
2288 * when we go to sleep. We save the current interrupt mask
2289 * so we can restore it after the system wakes up
2291 sc
->wow_intr_before_sleep
= ah
->imask
;
2292 ah
->imask
&= ~ATH9K_INT_GLOBAL
;
2293 ath9k_hw_disable_interrupts(ah
);
2294 ah
->imask
= ATH9K_INT_BMISS
| ATH9K_INT_GLOBAL
;
2295 ath9k_hw_set_interrupts(ah
);
2296 ath9k_hw_enable_interrupts(ah
);
2298 spin_unlock_bh(&sc
->sc_pcu_lock
);
2301 * we can now sync irq and kill any running tasklets, since we already
2302 * disabled interrupts and not holding a spin lock
2304 synchronize_irq(sc
->irq
);
2305 tasklet_kill(&sc
->intr_tq
);
2307 ath9k_hw_wow_enable(ah
, wow_triggers_enabled
);
2309 ath9k_ps_restore(sc
);
2310 ath_dbg(common
, ANY
, "WoW enabled in ath9k\n");
2311 atomic_inc(&sc
->wow_sleep_proc_intr
);
2314 mutex_unlock(&sc
->mutex
);
2318 static int ath9k_resume(struct ieee80211_hw
*hw
)
2320 struct ath_softc
*sc
= hw
->priv
;
2321 struct ath_hw
*ah
= sc
->sc_ah
;
2322 struct ath_common
*common
= ath9k_hw_common(ah
);
2325 mutex_lock(&sc
->mutex
);
2327 ath9k_ps_wakeup(sc
);
2329 spin_lock_bh(&sc
->sc_pcu_lock
);
2331 ath9k_hw_disable_interrupts(ah
);
2332 ah
->imask
= sc
->wow_intr_before_sleep
;
2333 ath9k_hw_set_interrupts(ah
);
2334 ath9k_hw_enable_interrupts(ah
);
2336 spin_unlock_bh(&sc
->sc_pcu_lock
);
2338 wow_status
= ath9k_hw_wow_wakeup(ah
);
2340 if (atomic_read(&sc
->wow_got_bmiss_intr
) == 0) {
2342 * some devices may not pick beacon miss
2343 * as the reason they woke up so we add
2344 * that here for that shortcoming.
2346 wow_status
|= AH_WOW_BEACON_MISS
;
2347 atomic_dec(&sc
->wow_got_bmiss_intr
);
2348 ath_dbg(common
, ANY
, "Beacon miss interrupt picked up during WoW sleep\n");
2351 atomic_dec(&sc
->wow_sleep_proc_intr
);
2354 ath_dbg(common
, ANY
, "Waking up due to WoW triggers %s with WoW status = %x\n",
2355 ath9k_hw_wow_event_to_string(wow_status
), wow_status
);
2358 ath_restart_work(sc
);
2359 ath9k_start_btcoex(sc
);
2361 ath9k_ps_restore(sc
);
2362 mutex_unlock(&sc
->mutex
);
2367 static void ath9k_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
2369 struct ath_softc
*sc
= hw
->priv
;
2371 mutex_lock(&sc
->mutex
);
2372 device_init_wakeup(sc
->dev
, 1);
2373 device_set_wakeup_enable(sc
->dev
, enabled
);
2374 mutex_unlock(&sc
->mutex
);
2379 struct ieee80211_ops ath9k_ops
= {
2381 .start
= ath9k_start
,
2383 .add_interface
= ath9k_add_interface
,
2384 .change_interface
= ath9k_change_interface
,
2385 .remove_interface
= ath9k_remove_interface
,
2386 .config
= ath9k_config
,
2387 .configure_filter
= ath9k_configure_filter
,
2388 .sta_add
= ath9k_sta_add
,
2389 .sta_remove
= ath9k_sta_remove
,
2390 .sta_notify
= ath9k_sta_notify
,
2391 .conf_tx
= ath9k_conf_tx
,
2392 .bss_info_changed
= ath9k_bss_info_changed
,
2393 .set_key
= ath9k_set_key
,
2394 .get_tsf
= ath9k_get_tsf
,
2395 .set_tsf
= ath9k_set_tsf
,
2396 .reset_tsf
= ath9k_reset_tsf
,
2397 .ampdu_action
= ath9k_ampdu_action
,
2398 .get_survey
= ath9k_get_survey
,
2399 .rfkill_poll
= ath9k_rfkill_poll_state
,
2400 .set_coverage_class
= ath9k_set_coverage_class
,
2401 .flush
= ath9k_flush
,
2402 .tx_frames_pending
= ath9k_tx_frames_pending
,
2403 .tx_last_beacon
= ath9k_tx_last_beacon
,
2404 .get_stats
= ath9k_get_stats
,
2405 .set_antenna
= ath9k_set_antenna
,
2406 .get_antenna
= ath9k_get_antenna
,
2408 #ifdef CONFIG_PM_SLEEP
2409 .suspend
= ath9k_suspend
,
2410 .resume
= ath9k_resume
,
2411 .set_wakeup
= ath9k_set_wakeup
,
2414 #ifdef CONFIG_ATH9K_DEBUGFS
2415 .get_et_sset_count
= ath9k_get_et_sset_count
,
2416 .get_et_stats
= ath9k_get_et_stats
,
2417 .get_et_strings
= ath9k_get_et_strings
,